Title: A cmos 18-thz-omega 240-mb/s transimpedance amplifier and 155-mb/s led-driver for low-cost optical-fiber links
A CMOS 18 THz 240 Mb/s transimpedance amplifier and 155 Mb/s LED-driver for low cost optical fiber links
Authors: Ingels, M
Ingels, Mark
Van der Plas, Geert
Crols, Jan
Steyaert, Michel #
Issue Date: Dec-1994
Publisher: Ieee-inst electrical electronics engineers inc
Series Title: IEEE Journal of Solid-State Circuits vol:29 issue:12 pages:1552-1559
IEEE Journal on Solid-State Circuits vol:29 issue:9 pages:1552-1559
Abstract: The realization of a complete low cost CMOS optical fiber link using a LED and PIN as optical components is presented, The driver and receiver are realized in a standard 0.8 mu m digital CMOS process which makes integration with a DSP possible. The driver is a current steering transistor combined with a small quiescent current source, The modulation current is 60 mA which allows a 155 Mb/s optical data-rate, The receiver is a three-stage transimpedance amplifier followed by a signal converter which provides digital output signal levels. The three-stage configuration makes possible the realization of a high transimpedance (150 k Omega), necessary to obtain a high sensitivity, combined with a high bandwidth. The achieved optical data-rate is 240 Mb/s for 1 mu A input modulation currents, This results in a transimpedance bandwidth of 18 THz Omega, which is one order of magnitude higher than recently published circuits, The speed performance of the total link is limited by the optical time-constant of the LED, leading to a 155 Mb/s optical link, designed for use in four-fiber interboard connections in 622 Mb/s B-ISDN systems.
ISSN: 0018-9200
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - MICAS, Microelectronics and Sensors
Electrical Engineering - miscellaneous
# (joint) last author

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